Re: AHH, Shouldn't we panic about the ASTEROID coming near Earth tomorrow??


guskz@xxxxxxxxxxx wrote:
PD wrote:
guskz@xxxxxxxxxxx wrote:
http://www.whatistheword.com/story/SciTech_895.html

They say there is nothing to fear since the Asteroid (1/2 mile wide)
will be passing around NOON (Eastern time) at 1.1 the distance from
Earth to the Moon on July 3....

.....call me CRAZY ***would*** we be WORRIED if it came at 0.1
distance (instead of 1.1) from the Earth??

But it won't.

The distance from Dallas, TX to El Paso, TX is 570 miles.
The distance from Dallas, TX to Lincoln, NE is 555 miles.

This does not mean that Lincoln NE is 15 miles from El Paso TX.

Do you see the connection?


They say the Asteroid is traveling at 8 moon distance per hour but
either way, I presume the Moon which takes 1 month to orbit the Earth
is probably on the opposite side of the Earth during the asteroid's
trajectory....

Either way, that's too close for my comfort!!! (especially when
gravity vs velocity is involved)

Don't be concerned. You can consider it in comparison with the moon's
effect on the earth, which does little but raise the oceans by a couple
of feet (tides).

Now, if the asteroid passes on the opposite side of the Earth from the
moon's orbit, it's effect on the moon would be comparatively 1/4th as
big, if the asteroid were the same size as the moon. But it is not the
same size as the moon. It appears to be at least a billion times
smaller. So its effect on the moon would be a billion times smaller
than the moon's effect on the earth, which ain't much.



PD



Why you ask? Because that's the asteroids distance from the Moon,
therefore it might hit the Moon (perhaps due to it's gravity)?!?!?

And then there might be THREE dangers:


1. The moon's will be knocked off balance (2000 miles wide hit by 1/2
mile Asteroid) and it's gravity may affect Earth own balance?

2. What would prevent the Moon from not hitting the Earth (since the
Moon's velocity direction (+ gravity pull) may be re-aimed towards the
Earth after the impact?

3. One web link says ***if**** the Asteroid would hit the Earth, it
could bring life to Saturn's moon Titan, because fragments of Earth
rock would go all the way there:
http://www.whatistheword.com/story/SciTech_767.html

THAT'S NICE BUT LIKEWISE FRAGMENTS FROM THE MOON if it were hit by the
Asteroid would then ALSO HIT EARTH?????

.

Relevant Pages

  • Re: Newtons theory of "Universal Gravitation"
    ... The Moon orbits around the Earth. ... change, its distance stays about the same, and hence its orbit must be ... named that pulling force gravity. ...
    (sci.physics)
  • Re: Lunar Space Elevator simply isnt for everyone
    ... As to an LL-1 based sizable asteroid tethered to the Moon, ... You do realize that a millionth of the surface area of mother Earth ... About energy, uh, there is a lot of recycling to be done. ...
    (sci.space.policy)
  • Re: Mining the Moons of Mars
    ... soil, bodies of water, oceans, or forests of Earth - which are also ... you'd see the moon shine like a beacon - despite its 8% albedo. ... moon Cruithne 3753, at not 1% the cost of doing a Mars moon? ... asteroid belt - 3 years. ...
    (sci.space.policy)
  • Re: Near Earth Objects - a resource for the 21st century
    ... Why isn't our Selene/moon considered as a "Near Earth Object"? ... Is there some other moon in ratio to it's planet that's nearer or more ... close to Earth's orbit exist. ... 433 Eros, by NASA's Near Earth Asteroid Rendezvous probe, ...
    (sci.space.policy)
  • Re: AHH, Shouldnt we panic about the ASTEROID coming near Earth tomorrow??
    ... They say there is nothing to fear since the Asteroid ... will be passing around NOON at 1.1 the distance from ... Earth to the Moon on July 3.... ... Because that's the asteroids distance from the Moon, ...
    (sci.astro)